Grid of RxC

[jbpineiroc]

I need modify the grid to allow only drag and drop operations in a grid of RxC, don't extend the grid. By example, initially I have a grid of four columns and five rows (direction: 'vertical'), and when I move an element to bottom, it add a new row, that is wrong for my application. It should adjust the elements in the empty space, not add an extra row. It is possible?
I want a behavior like https://github.com/ksylvest/jquery-gridly